Aatrox + Max Devourer W animation/SFX not playing

Was playing Aatrox in ranked and after I maxed out my Devourer I thought my W (Blood Thirst/Blood Price) stopped working. The animations stopped playing and the icon above my spells stopped appearing. I went into a private game before posting and confirmed that while I still received healing for Blood Thirst and dealt bonus damage for Blood Price, the animation for both was not playing for the phantom and Aatrox himself. I've uploaded a video of a couple instances of it happening. The most consistent time is where I'm attacking scuttle bug towards the end of the video, but as you can see it doesn't always happen although it does very regularly.

I hope the video and information I provided is enough to get this fixed. It isn't game breaking or anything since the spell technically still works, but I thought I'd put it out there anyways.